Refactor Dockerfile to source nvm.sh using dot operator and update environment variables

Author: cbluebird

Language/node.js/22/Dockerfile

@@ -12,12 +12,12 @@ RUN apt-get update && \
     mkdir -p $NVM_DIR && \
     cp -r /root/.nvm/* $NVM_DIR/ && \
     [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" && \  
-    echo 'export NVM_DIR="$NVM_DIR"' >> "/root/.bashrc" && \
-    echo '[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"' >> "/root/.bashrc" && \
-    echo '[ -s "$NVM_DIR/bash_completion" ] && . "$NVM_DIR/bash_completion" ' >> "/root/.bashrc" && \
-    echo 'export NVM_DIR="$NVM_DIR"' >> "/home/devbox/.bashrc" && \  
-    echo '[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"' >> "/home/devbox/.bashrc" && \
-    echo '[ -s "$NVM_DIR/bash_completion" ] && . "$NVM_DIR/bash_completion" ' >> "/home/devbox/.bashrc" && \ 
+    echo "export NVM_DIR=\"$NVM_DIR\"" >> /home/devbox/.bashrc && \
+    echo "[ -s \"$NVM_DIR/nvm.sh\" ] && . \"$NVM_DIR/nvm.sh\"" >> /home/devbox/.bashrc && \
+    echo "[ -s \"$NVM_DIR/bash_completion\" ] && . \"$NVM_DIR/bash_completion\"" >> /home/devbox/.bashrc && \
+    echo "export NVM_DIR=\"$NVM_DIR\"" >> /root/.bashrc && \
+    echo "[ -s \"$NVM_DIR/nvm.sh\" ] && . \"$NVM_DIR/nvm.sh\"" >> /root/.bashrc && \
+    echo "[ -s \"$NVM_DIR/bash_completion\" ] && . \"$NVM_DIR/bash_completion\"" >> /root/.bashrc && \
     nvm install 22 && \
     nvm use 22 && \
     npm install -g typescript yarn pnpm && \